Engine-operated pump



April 11, 1933.

F. G. SCHWEISTHAL.

ENGINE OPERATED PUMP Filed June 17, 1929 as 24%.7W5

'Patented Apr..1l,1933

uurrsn s'rA'rss PATENT OFFICE mom-omen!) rm Application fled June 17, 1989. Serial Ho. 871,881.

This invention has to do with engine-o erated pumps for supplying the engine wit liquid reqmred for any function of the engins as fuel, lubricant, or coo water, or any auxiliary or collateral pumping surface, "and its purpose is to provide a casing for cougling t e pump casmg to the engine casing aving extended into it in co o rating relation an engine member from which power for pumping 1s derived and a pump member through which that wer is communicated to. the pump. It consists in the elements and features of construction shown and descri as indicated in the claims.

In the drawing:

Figure 1 is a partly sectional view showing the pump in top plan and the coupling casing and adjacent part of theengine casing in hori- 'zontal section at the plane of the axis of the en e cam shaft.

. igure 2 is a section at the line 2-2 on Fi re 1.

igure 3 is an end elevation of the couplin casing looking at the end which is mounte against the engine casing.

Figure 4 is a section at" the line 4-4 on .Fire3. W

lgure 5 is asection at the line 5-5 on Fi re 3.

igure 6 is a detail side elevation of the pump looking at the side at which the coupling casing is mounted against the pump casteferring to the drawing z-A represents the engine casing; B represents the pump casing; C represents the coupling casing.

' The engine casing has an aperture, 20, through w ich protrudes the engine shaft, 30,

from which the power is to be derived for operating the pump. The pump casing has an opening, 40, into which protrudes the operating arm, 44, of the pumping member of the pump, said pumping member and the further details of the pump not being shown, and it may be understood that these details are of any suitable form and construction adapted for the particular purpose to which the pump is applied, asfor pum ing fuel,

iary or collateral service.

er auxil- The coupling casing, G, is formed for closmg the aperture, 20, of the engine casing when the coupling casing is mounted against.

l I OI CHICAGO, ILLINOIS, ASSIGNOB '10 SI'B WABT-W 003- POMTIOI, OI CHICAGO, ILLINOIS, A CORPORATION O! VIRGINIA co -operating as hereinafter descri ed with the pumping member arm, 44. Before thus fitting and closing the aperture, 20, of the engmecasing, the coupling casing is formed as to dimension and contour at the end which is mounted on the engine casing for protruding nto and fitting said aperture, as seen at the nwardly rotruding terminal, 21, of said casmg, 0, w ich is encompassed by a shoulder, 22, stopping exteriorly of the engine casi on the margin of the a rture 20, and constituting the face of a ange having bolt holes, 23, through which bolts, 24, are inserted screwing into the engine casing for securing the coupling casing to the engine casmg h e cavity of the cou angular in extent comprisin the portion, 25, through which the engine aft, 30, extends and in which there is provided a j ourna bearing, 26, for said shaft,-and a portion, 28, extending at right anglle to the first mentioned portion, 25, an

face of said coupling at right an les to the s opening through a pling casing'is rightplane of the shoulder, 22, at whic the coupling casing is mounted on the engine casin as mentioned above, said face being adap for seatin the coupling casing, 0, against the. corres n ing face 41, of the pump casing forms at the end 0 the latter through which the pum ing member arm, 44, protrudes, either 0 said parts,coupling casing orpump casing,being flanged encom assin said face for screws to be inserted t roug the flange and screwed into the other member. Preferably, as illustrated, the couplillilg casing has a flange shown at 29, an

pump casing has a flan screwing into the flange, 29, of the pump casing.

The engine shaft, 30, is provided at the end in the coupling casing with a cam, 34 and the pumping member arm, 44, is form shown at 43 for; bolts, 44", inserted throug the flange, 43, and

' for co-operating with the cam for deriving from the engine shaft positive movement in one direction for operating the pump, it being understood that the pump mechanism comprises means for giving the pumping member its intake stroke and causing the terminal of the arm, 44, to follow the cam in the idle phase of the cam cycle. the casing at the junction of the portions through which respectively the engine shaft and the pumping member stem extend,is'enlarged suitably for accommodating the cooperating action of the cam and the pumping morn er arm.

ll claim:

l in combination with an internal com- I bustion eraine having an aperture in its casan opening in said casing at ing which an essential operating memberoi the engine mountedior support within the 7 engine casing is exposed for communicating motion, a pumping apparatus corrigarisirigav Pumper actuator, and a casing in which'said actuator is mounted, said casing being formed with an aperture at which said actuator is exposed for being actuated, a coupling casing aving a cavity extending through it from one side thereof to an o ening at another side thereof, said casing sing arranged to be secured to the ump casing and to the engine casing with its said openings respectively mated to the openings of the pump casing and engine casing, said engine member and said pumper ac; tuator, exposed at the engine casing and pump casing apertures respectively being arranged for direct operative engagement with each other when the coupling casing is thus all) secured to the pump and engine casing.

2. In combination with an internal combustion engine having an aperture n its casing from which an essential operating member of the engine mounted for support within the engine casing is protruded for communicating motion, a pumping apparatus com rising a pamper actuator, and acasmg in w ieh said, actuator is mounted, said casin being formed with an aperture at whlch said actuator is exposed for being actuated, a coupling casing having a cavity extend ng through it from an opening in said casing at-one side thereof to an opening at another side thereof, said casing'being arranged to be secured to the pump casing and to the engine casing with its said openings respectively mated to the openings of the pump casing and engine casing, said engine member and said pumper actuator protruded at the engine casing and pump casing apertures respectively being arranged for direct operat1ve engagement with each other when the cou ling casing isthus secured to the pump an engine casing. 3

3. In the construction defined in claim 2, the protruding engine member being a rotative shaft having a cam for actuating the The cavity of pump member, the coupling casing having at the side at which it is secured to t e engine casing a cap portion for closin the on no casing aperture protrudes, said cap portion of the coupling casing having a journal bearing for theengine shaft antecedent to the cam thereon.

4. In the construction defined in claim 2, the protruding engine member being a rotative shaft having a cam for actuating the pump member, the coupling casing having at the side at which it is secured to the engine casing a cap portion for closing the en ine casing aperture through which the said s -aft protrudes, said cap member of the coupling casing having journal bearing for the engine shaft antecedent to the cam thereof and. having oil ducts leading from the inner end of said coupling casing within the engine casing cavity to said shaft journal bearing for admitting lubricant from t the shaft.

5. In the construction defined in claim 2, the protruding engine member being a rotative shaft having a cam for actuating the pump member, the coupling casing-having at the side at which it is secured to the engine casing a cap portion for closing the en ine casing aperture through which the said s aft protrudes, said cap portion of the coupling casing having a journal bearing for the engine shaft, with radial webs by which said 30urnal bearing is carried in said cap portion of the coupling casing, and having a cavity leading from the inner end around he engine casing to said journal bearing past said radial webs to the locality of the co-operationot the cam and the pump operating member, in which cavityf said parts co-operate, whereby access is afiorded for lubricant from the engine casing to said cavity for lubricating said co-operating parts.

6. In the construction defined in claim 2,

the protruding engine member being a rotative shaft having a cam for actuating the pump member, the coupling casing having at the side at which it is secured to the engine casing a cap portion for. closing the-en ine casing aperture through which the said s aft protrudes, said cap portion of the coupling casing having a journal bearing for the en? gine shaft, and radial webs by which said ournal bearing is carried in said cap portion of the coupling casin and having-a cavity leading from the inns end around said ournal bearing past said radial webs to the locality of the co-operation of the cam and the pump-operating member, in which cavity said parts co-operate, whereby access is afforded for lubricant from the engine casing to said cavity for lubricating said cooperating parts, the cap portion of the coupling casing which protrudes into the engine casing having a duct at the lower side leading from the portion of said cavity in which the cam and pumpin member co-operate' past the shaft ournal and opening within the engine casing sai duet being at the lower side of the shait bea whereby the lubricant obtaining access to the cavity for lubricatinflthe cam and co-operating puxnping niem r may drain back into the en e casing. v r

testimon whereof, I have herelmto set my hand at C 'cago, Illinois, this 12 day of June, 1929.

vFRED G. SCHWEISTHAL. 

